Your Answer is

Correct Answer is H

Explanation

First of all, the total monthly cost of each club is the fixed fee plus the cost of each book. If a total of x books are read, the total cost of the ABC club is 40+2x, and the total cost of the Easy club is 35+3x. To make the costs on both sides the same, that is, 40+2x=35+3x, get x=5, choose H